Silo ventilator and discharge



w. H. DICKSON & L. s. OVERHOLT. sumo vsmums AND mscumma.

APPLICATION FILED JULY [9. 1915. 1 1 94:, 1 50. Patented Aug. 8, 1916.

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W. H. DICKSON & L. S. OVERHOLT.

SILO VEN'HLATOR AND DISCHARGE.

APPLICATION FILED JULY 19, 1915.

1,194,150. Patented Aug. 8, 1916.

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WILLIAM H. DIOKSON AND LESTER S. OVER I-IOLT, 0F OMAK, WASHINGTON.

SILO VENTILATOR AND DISCHARGE.

Specification of Letters Patent.

Patented Aug. 1916.

Application filed July 19, 1915. Serial No. 40,740.

To all whom it may concern:

Be it known that we, WILLIAM H. DIOK- SON and Lns'rnn S. OVERHOLT, citizens of the United States, residing at Omak, in the county of Okanogan and State of Washington, have invented certain new and useful ful Improvements in Silo Ventilators and Discharges; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

This invention relates to new and useful improvements in silos and more particularly to attachments for silos whereby the ensilage may be easily and quickly removed from the silo, and also by the same means the silo will be kept constantly ventilated to 0bviate any danger of carbon dioxidgas rising therein. 1

Another object of this invention is to do away with the large number of doors in the wall of the silo, which overcomes the inconvenience and danger incident to the operation of closing and opening the doors of the same, and provides a reliable method of getting the ensilaQe out of the silo at all times with safety and convenience to the worker.

A further object of the invention is to provide a device which is simple and durable in construction, inexpensive to manufacture, and one which will be very efficient'in operation.

With these and numerous other objects in view, our invention'consists of the novel features of construction, combination, and arrangement of'parts which will be hereinafter referred to and more particularly pointed out in the specification and claims.

In the accompanying drawings: Figure 1 is a side elevation of our improved silo; Fig. 2 is a horizontal section taken on the line 22 of Fig. 1 Fig. 3 is a partial vertical section taken on the line 3-3 of Fig. 2 showing particularly our improved silo ventilator and discharge in position; Fig. 4 is a detail vertical section taken on the line l'l of Fig. '1; Fig. 5 is a detail perspective view of the upper section of the ventilating and discharge tube; Fig. 6 is a similar reference characters designate corresponding parts throughout the several views and wherein the letter S designates a silo which is of the ordinary height having a round circular wall and a cone-shaped top, said top having an opening T therein. A ladder L is securedto the outer wall of the silo and extends from the body to the top thereof beneath the opening T. This ladder also extends down the inner wall of the silo to the bottom thereof.

Our improved silo attachment consists of a. combined ventilator and discharge tube 1 which is vertically positioned in the silo adjacent the wall thereof as clearly shown in Fig. 3 of the drawings. This tube or pipe 1 consists of a plurality of detachable superimposed sections 2, one of which is shown in detail in Fig. 6 of the drawings. This sec tion 2 has an enlarged upper end 3 which is adapted to form a shoulder 41- on the inner wall thereof, so that when these sections are placed vertically one above the other, the

lower end of one section will engage and be seated on the shoulder l in the upper end of the adjacent section. This forms an easily detachable but secure connecting means between the sections of the said tube, and will firmly hold them in a vertical position unsupported by any hook attachment extending outwardly from the wall of the silo.

The uppermost section of the tube 1 as shown at 5 has its upper end (3 outwardly flared and is adapted to receive a closure or stop 7 therein for a. purpose to be hereinafter more fully described.

The bottom section 8 of the tube 1 is angular in shape as clearly shown in Fig. 3 of the drawings and has its angular bent lower.

portion 9 projecting laterally and downward from the tube 1, and is adapted to extend through an aperture-10 in the wall of the silo adjacent its lower end. This lower section 8 is supported. in the above described position by means of'a base member 11 which is formed of any desirable material preferably ofconcrete. This base member 11 has a downwardly and outwardly extendingpassage 12 therethrough inwhich the said lower section 8 of the pipe is securely held. A guard 13 is provided around the aperture 10 in the wall of the silo to additionally support the projecting lower end 9 of the pipe.

When the parts are positioned as above described, it will be seen that it is a comparatively easy matter after the silo has been filled, to remove the ensilage therefrom by pouring the same down the tube 1, where by it will be carried from the silo by the 5 same, on account of the outwardly projecting lower section 8 of the said tube. A wagon or any preferred transporting means may be backed up to the outlet of the tube to receive the ensilage as it drops therefrom. It will also be noted that this tube will act as a ventilator for the silo as well as a discharge.

An additional or supplemental ventilating tube 14: is provided for the lower end of the silo S and the same consists of a right angular shaped pipe, having its horizontal portion 15 positioned on the bottom of the silo and the outer end of the same projecting through the wall of said silo at the bottom theerof as clearly shown in Fig. 3 of the drawings. The vertical portion 16 of the pipe 14: comprises a plurality of detachable sections 17, the uppermost of which is positioned below the top of the lower section of the combined ventilator and discharge pipe 8 for a purpose to be hereinafter more fully described.

An opening or door D is provided in the wall of the silo S as shown in Fig. 1 of the drawings for the purpose of enabling the operator to easily gain access thereto when the silo has been half emptied, without putting him to the necessity of climbing the ladder L to the entrance T in the top of the same and then passing down to the level of ensilage in the silo. It will be noted that this opening or door D is the only aperture in the wall of the silo which is necessary when using the herein described attachment.

In operation, when the parts of this attachment are in position as shown in Fig. 3 of the drawings, the silo is ready to be filled, and on account of the stopper 7 in the upper end of the tube 1, there will be no discharge or outlet to the silo during the filling operation. When the silo has been filled to the level of the top section 5 of the tube 1, and it is desired to remove certain of the ensilage therefrom, the stop 7 is removed from the said tube and the operator, who has gained access to the silo by means of the ladder L and the opening T, has only to throw the desired amount into the tube 1, whereby the same will be carried by gravity therethrough and out through the laterally bent lower portion 9 of the same, where it will be caught in any desired way. Vhen a sufiicient amount of the ensilage has been re moved to uncover the section 2 of the tube 0 or pipe 1, and it is not-desired to remove any @5- through the pipe or tube 1. This prevents any carbon dioxid gas forming in the silo on top of the ensilage therein, which it will rest upon, owing to the fact that it. is heavier than air, and when in this position is espe cially dangerous to persons attempting to remove ensilage therefrom. On account of the top of the tube 1 being level with the top of the ensilage in the silo, this gas is prevented from forming in the said silo and will be carried oil through the tube 1, thereby obviating all danger arising therefrom. This operation of removing the different sections according to the removal of the ensilage in the silo is carried out through the entire length of the tube or pipe 1 1 so that the silo will at all stages of the unloading operation be fully ventilated. Upon removal of all the sections 2 of the pipe, the ensilage will gradually have been brought down below the level of the station ary bottom section 8 of said pipe which is held firmly and securely in the concrete base member 11. It is obvious that it is impossible to remove this section, and owingto the fact that the same is spaced a considerable distance from the bottom of the silo, a certain amount of gas will be liable to form in the silo below the top of said section of the outlet pipe. To overcome this objection, we

have provided an additional or supplemental ventilating pipe 14 which is adapted for ventilating purposes only and connects the lower end of the silo with the outside atmosphere, as clearly shown in Fig. 3 of the lator of the space above the ensilage in the silo at all times. The danger from nonventilated silos arises, as has been pointed out, by the forming of carbon dioXid air which is formed over the surface of the ensilage, and being heavier than the air will crowd the air out and will rise until the. first opening allows it to move out of the silo. Any person getting into this space below the opening will be asphyxiated, lacking oxygen to breathe. made up of a plurality of sections, the operation of which has been fully described, always presents a ventilating attachment between the space above the ensilage in the This attachment being I silo and the atmosphere at all stages of the unloading operation, thereby doing away with any chance of the above mentioned gas forming therein. Furthermore this ventilating tube also acts as an easy and simple discharging means for quickly and safely removing ensilage from the silo.

From the foregoing description of the construction of this improved silo attachment, the manner of applying the same to use, and the operation thereof, will be readily understood, and it will be seen that we have provided a simple, inexpensive and efiicient means for carrying out the objects of the invention.

While we have particularly described the elements best adapted to perform the various functions set forth, it is obvious that changes in form, proportion, and the minor details of construction, may be resorted to within the scope of the appended claims, without departing from the spirit or sacrificing any of the principles of the invention.

We claim as our invention:

1. The combination with a silo having a discharge and ventilating pipe comprising a plurality of superimposed sections with the bottom section projecting through the wall of the silo adjacent its lower end, of a supplemental substantially- L-shaped ventilating pipe with its base portion positioned adjacent the bottom of the silo and projecting through the Wall of the same and its upright portion comprising a plurality of superimposed detachable sections the uppermost of which is positioned below the top of the bottom section of the discharge and ventilating pipe.

2. A silo including a discharge and ventilating pipe comprising a plurality of detachable superimposed sections positioned vertically adjacent its wall, the bottom section of said pipe being bent laterally and projecting downwardly through the wall of the silo adjacent the bottom of the same, a supporting base for said bottom section of the discharge and ventilating pipe, and a supplemental ventilator having a pipe with its horizontal portion positioned on the bottom of the silo and projecting through the side of the same, and its vertical portion comprising a plurality of superimposed detachable sections, the uppermost of which being positioned below the top of the bottom section of the discharge and ventilating pipe.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

WILLIAM H. DICKSON. LESTER S. OVERHOLT. Witnesses:

FRANK H. KELLER, EMERSON E. WARWICK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

